fix(material/list): list item truncates on narrow screen widths

[essjay05]

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Fixes issue with Angular Components List component where the list item truncates on narrow screen widths (ie. mobile screens). Removes white-space wrap style and adds some height to primary lines for readability.

Before screenshot After screenshot

Fixes b/291296866

[github-actions[bot]]

Deployed dev-app for 369bb8c84a9d3df265a07b3b60c5448a706811e8 to: https://ng-dev-previews-comp--pr-angular-components-29033-dev-eoyhezyg.web.app

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